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Re: Poor idle in gear, continued
So aside from a "small" area on the passenger side of your manifold that was washed, underneath the plenum is completely blackened and carbonized? It should be REALLY dirty in there. How did the driver's side look?
Fuel pressure (I believe) is supposed to be up and around the 64psi range, and driveability issues start at 60.
Any odor when truck is at operating temperature?
Just bite the bullet and pull the plenum off man.
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